The best time for a Glacier Park tour
Glacier changes more between June and September than many parks do in a year. The high road opens only when the plows finish, and by October the first snow can dust Logan Pass again. Down in the valley the rivers drop week by week. This guide walks through the year with the tours that suit each part of it, and how far ahead people book them.
The year at a glance
Glacier runs on two clocks, the snow on the high road and the water in the rivers. The table lines them up with the tours on GetYourGuide and Viator. Every date in it moves with the snowpack, so check the park's current conditions before you lock anything in.
| Period | Going-to-the-Sun Road | What it is like | Tours to look at |
|---|---|---|---|
| Roughly November to March | Plowed only to about Lake McDonald Lodge | Highs around freezing, heavy snow, short days | Winter driving tour, drive and snowshoe |
| April and May | Plowing under way, lower valley opening | Some services still closed | Check each listing's calendar |
| June | Upper road often still under snow | Rivers at their biggest and coldest | Whitewater and scenic float |
| July to mid-September | Usually open end to end | Warmest and busiest | Every summer tour |
| Mid-September to mid-October | Open until snow closes the top | Fewer people, autumn color, cold mornings | Summer tours while dates last |
High summer, July to mid-September
This is the window most people picture. Going-to-the-Sun Road is usually open over Logan Pass by July, and afternoon highs in West Glacier sit around 78–80 °F (26–27 °C). Up at the pass, 6,646 ft (2,026 m) above sea level, the air is far cooler. Snow can fall up there in any month. It is also the crowded season. Drivers heading up the west side have needed a timed entry booking at peak hours in recent summers, and that system changes, so look up the park's current rules before you go.
For a guided day in this window, Tour Glacier's west side tour (from ~$250) covers Lake McDonald and Apgar with pickup and lunch, though it does not cross the pass. If you would rather drive the whole road yourself, Shaka Guide's GPS audio tour, from ~$10 per car, narrates it from either entrance. Its catch is that you do the driving and need any reservation the park requires, and its reviews are mixed, averaging 4.1 from 31. Our Sun Road guide compares every way across.
Long evenings leave room for a second outing. Glacier Raft Company's whitewater trip with dinner, from ~$113, spends about 3.5 hours on and beside the river, with a meal after the paddling. The catch is timing, since it is a late-afternoon slot offered in summer only. Late summer also carries a risk you cannot book around, because wildfire smoke can haze the peaks in some years.
Our two picks, one for each season
June, when the rivers run high
June is snowmelt month. Plows are often still clearing the upper Sun Road, which may not open end to end until late June or July, so a June trip can leave the high country out of reach. Down on the Middle Fork of the Flathead, the same melt brings the year's biggest whitewater. Glacier Raft Company sets its half-day trip length by the water.
- June to early July. About 2.5 hours, on the biggest and coldest water;
- Mid-July to early August. About 3 hours;
- Mid-August onward. About 3.5 hours, gentler as the river drops.
Cold water comes with big water. Wetsuits and fleece are free when the company says they are needed, and rafting the Middle Fork covers what to wear. Families with small children may find the calmer scenic float, from ~$77, the easier June outing.
Ride the June water
Glacier Raft Company's half-day whitewater trip runs nine named rapids on the Middle Fork and lends wetsuits and fleece free on cold days. Seats start from ~$77. Travelers book it about 38 days ahead on average, and you can cancel free up to 24 hours before.
September and early October
After Labor Day the crowds thin and the mornings turn cold. Larch and aspen go gold on the slopes, and the first snow of autumn can whiten Logan Pass, with the road's season at the top usually ending around mid-October. Days in the valley can still be fine for a driving tour, but pack a warm layer for every stop. What to wear and bring on a Glacier tour covers the layers. The whitewater trips are at their longest by then, and the river is at its gentlest.
Wildlife never follows a calendar. A quiet September week can be rich or empty, and no tour can promise an animal. Our wildlife guide explains what turns up and where.
Winter, roughly November to March
Snow closes the Sun Road beyond about Lake McDonald Lodge, and the plowed stretch from West Glacier is all you can drive on this side. Highs in West Glacier hover around freezing, about 32 °F (0 °C), and daylight is short. Two Tour Glacier days fit the season. One is the winter driving tour (from ~$250) and the other the drive and snowshoe day (from ~$230). Travelers book the winter tour about 39 days ahead on average, sooner than the summer tour but still more than a month out. Glacier National Park in winter compares the two.
Treat winter as a trip in its own right rather than a fallback for missing July. The valley is at its quietest, with snow down to the shore of Lake McDonald and the summer crowds long gone. The winter driving day at ~$250 is also the only one of the six main tours whose Viator reviews are all five stars, 34 of them. What you give up is daylight and warmth on a route that stops at the lower valley, and the snowshoe option has only a few reviews behind it.
Spring in April and May
Spring is the in-between. The plows are at work on the Sun Road while the lower valley around Apgar and Lake McDonald comes out of the snow, and some services have yet to open. It suits travelers who are happy with the valley floor and few other people. On GetYourGuide and Viator, check each listing's calendar for spring dates rather than assuming the summer or winter tours run.
How far ahead to book
Viator shows how far ahead travelers book each tour on average, and for summer the figures are a useful warning.
- Morning nature walk. About 70 days;
- Summer driving tour. About 62 days;
- Scenic float. About 50 days;
- Winter driving tour. About 39 days;
- Half-day whitewater. About 38 days.
The nature walk tops the list, perhaps because its groups are small. Free cancellation up to 24 hours before the six main tours (two days for the walk on GetYourGuide) lets you hold a date early and drop it if plans change. What a Glacier tour costs sets out the refund terms. Picking a base matters most in July, when the few beds near West Glacier book out first, so read our guide to where to stay early.